Android Personal Safety Features: (Safety assistance: to use camera flash or not)

I was delighted to find out that on the Samsung Galaxy SIII Neo, Android 4.4.2, under Settings | General | Safety Assistance, you can enable a setting which will take a front and back picture and send it to all emergency contacts. The case of being in a hospital emergency room where nobody knows who to contact and you've passed out was covered in previous Android versions via the ICE - In Case of Emergency feature, which is separate.

Ok, so consider this scenario: you go to a restaurant in some unsafe place in the world, and then you're asked to give away your credit card and pin number or you would be killed. The device allows you to press both the volume up and volume down picture (for three seconds, which to me seems a bit long for a safety feature?, but then again, what can you do) to send a picture, with embedded GPS coordinates, and the picture of your wereabouts might even include the person after you.

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   However, what if the camera flashes? The person will realize it, and your life could be taken.

   
   


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   But on the other hand, suppose you are running away from someone in the woods. You are several meters ahead, and have the time to do this, but if the device doesn't flash then the receivers will be able to see nothing, just the whereabouts from the GPS coordinates.

   
   

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  So, what I think would be nice to have, is to be able to configure whether to use flash or not. This would make things safer, wouldn't it?

  
  


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  ALSO: What if the user has no credit, will the feature work? MMS messages tend to cost money, unlike Skype calls, but will work when the recipients run older phones as well. Has an agreement been reached with the network operators to send MMS messages for free under these circumstances?